like a mirror, and retaining and recording the impressions. But we have another mode of memory in ourselves which might suggest the mode of memory in nature, that by which our subjective life is recorded. Mood, thought, passion, ecstasy, all are preserved for us, can be summoned up and re-created. How is this memory maintained? Are we continuously casting off by way of emanation an image of ourselves instant by instant, infinitesimally delicate but yet complete? Is every motion of mind and body preserved so that a complete facsimile, an effigy in three dimensions, exists of every moment in our being. Is the memory of nature like that? Is it by a continuous emanation of itself it preserves for itself its own history? Does this hypothesis lay too heavy a burden on the substance of the universe as we know it? I do not like to use arguments the validity of which I am not myself able to establish. But I might recall that an eminent thinker in science, Balfour Stewart, supposed of the æther that there was a continual transference of energy to it from the visible universe, and that this stored-up energy might form the basis of an immortal memory for man and nature.
